What is an ocean trench?

What is an ocean trench? Fill in the blank: An ocean trench is a long, narrow, and extremely deep depression on the ocean floor, formed at ________ tectonic plate boundaries where one plate is forced beneath another in a process called subduction.

• convergent

• divergent

• transform

• passive

Which process is responsible for the formation of ocean trenches?

• Erosion

• Subduction

• Sedimentation

• Volcanism

Ocean trenches are most prominent around which ocean?

• Atlantic Ocean

• Indian Ocean

• Pacific Ocean

• Arctic Ocean

Fill in the blank: The deepest parts of the ocean, known as ocean trenches, are found within the ________ zone, characterized by immense pressure, cold temperatures, and total darkness.

• hadalpelagic

• epipelagic

• mesopelagic

• bathypelagic

Ocean trenches are often associated with volcanic activity and earthquakes.

• True

• False

Fill in the blank: ________ is the process where two tectonic plates move towards each other.

• Plate Convergence

• Plate Divergence

• Plate Sliding

• Plate Subduction

Fill in the blank: The denser and more rigid oceanic plate bends and sinks beneath the less dense overriding plate into the Earth's ________.

• mantle

• crust

• core

• atmosphere

As the denser plate bends and descends, it creates a deep, V-shaped depression on the ________, forming the trench.

• seafloor

• mountain

• continent

• island

The process of subduction can lead to the formation of volcanic arcs and earthquakes.

• True

• False

At destructive plate margins, what is formed when plates move towards each other?

• Subduction zones and ocean trenches

• Mid-ocean ridges

• Fold mountains only

• Island arcs only